IMPORTANT: The security issue described below has been confirmed by ISC
to be 'in the wild' as of 18:00UTC July 26, and exploitation of this
vulnerability against production servers has been reported by multiple
organizations. Please be advised that immediate action is recommended.

A specially crafted query that includes malformed rdata can cause
named to terminate with an assertion failure while rejecting the
malformed query.

BIND 9.6 and BIND 9.6-ESV are unaffected by this problem. Earlier
branches of BIND 9 are believed to be unaffected but have not
been tested. BIND 10 is also unaffected by this issue.

Please Note: All versions of BIND 9.7 are known to be affected,
but these branches are beyond their "end of life" (EOL) and no
longer receive testing or security fixes from ISC. For current
information on which versions are actively supported, please see

Authoritative and recursive servers are equally vulnerable.
Intentional exploitation of this condition can cause a denial
of service in all nameservers running affected versions of BIND
9. Access Control Lists do not provide any protection from
malicious clients.

In addition to the named server, applications built using libraries
from the affected source distributions may crash with assertion
failures triggered in the same fashion.

Crashes have been reported by multiple ISC customers. First
observed in the wild on 26 July 2013, 18:00 UTC.

Solution:

Upgrade to the patched release most closely related to your
current version of BIND. Open source versions can all be
downloaded from Internet Systems Consortium | Downloads. Subscription
version customers will be contacted directly by ISC Support
regarding delivery.

From where you get this acknowledge regarding this ? as i didn't received any email from cPanel itself.

Click to expand...

The likely reason why you didn't receive an email from cPanel regarding this CVE is because this is not a cPanel specific issue. It's specific to any OS running one of the vulnerable versions of Bind. It's OS-related (RHEL, CentOS, Ubuntu, etc) rather than cPanel-related.

You can get the information directly from the ISC website -- right from the horses' mouth, if you wish:

If you're running RHEL or CentOS as your OS, you might want to follow the bugzilla writeup on the current status of any update for RHEL. Once Redhat releases an update, it'll trickle down to CentOS users and thus be available as an update in CentOS.